b25b51eb63
Current implementation tries to fold the operand before
rematerialization because it can reduce one register usage. But if there
is a physical register available we can still rematerialize it without
causing high register pressure.
This patch do this check to find the better choice. Then we can produce
xorps %xmm1, %xmm1
ucomiss %xmm1, %xmm0
instead of
ucomiss LCPI0_1(%rip), %xmm0
65 KiB
65 KiB